Rui Yin MD Ph.D. is an Associate Professor of Dermatology, Southwest Hospital, Third Military Medical University, and a visiting associate professor of Wellman Center for Photomedicine at Massachusetts General Hospital. Her research interests lie in the areas of photodynamic therapy and laser therapy for photoaging and skin aging. She has published 20 peer-reviewed articles in English, over 40 peer-reviewed articles in Chinese, over 30 conference proceedings, and two book chapters. She is a reviewer for seven journals and serves on National Natural Science Foundation of China as a grant reviewer. She is also a committee member of China Dermatologist Association and China Medical Association. Qiquan Chen, MD is a resident doctor in Department of Dermatology, Southwest Hospital, Third Military Medical University, Chongqing, China. His interests currently focus on the immunological mechanisms of phototherapy treatment in cancer therapy. Michael R Hamblin, Ph.D. is a Principal Investigator at the Wellman Center for Photomedicine, Massachusetts General Hospital, an Associate Professor of Dermatology, Harvard Medical School and the affiliated faculty of Harvard-MIT Division of Health Science and Technology. He directs a laboratory of around twelve scientists who work in photodynamic therapy and low-level light therapy. He has published 274 peer-reviewed articles, is Associate Editor for eight journals and serves on NIH Study-Sections. He has edited 10 proceedings volumes together with four other major textbooks on PDT and photomedicine. In 2011 Dr Hamblin was honored by election as a Fellow of SPIE.